Add productions/data for about 14 qualifiers (versions 1.2 through 4.3). Fixed some case issues for rect/array keywords.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@20742 e7fa87d3-cd2b-0410-9028-fcbf551c1848